Pith Number

pith:CKZZREOO

pith:2012:CKZZREOO7VQHBQMZACFNIBT4EP

not attested not anchored not stored refs pending

Method for measuring the entanglement of formation for arbitrary-dimensional pure states

Ming Li, Shao-Ming Fei

arxiv:1201.6292 v1 · 2012-01-30 · quant-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CKZZREOO7VQHBQMZACFNIBT4EP}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T04:03:33.197709Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

12b39891cefd6070c199008ad4067c23ea598b1ca165d7088af89376ad339b44

Aliases

arxiv: 1201.6292 · arxiv_version: 1201.6292v1 · doi: 10.48550/arxiv.1201.6292 · pith_short_12: CKZZREOO7VQH · pith_short_16: CKZZREOO7VQHBQMZ · pith_short_8: CKZZREOO

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/CKZZREOO7VQHBQMZACFNIBT4EP \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 12b39891cefd6070c199008ad4067c23ea598b1ca165d7088af89376ad339b44

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3c53482d621775cc06f27e1c42d3640f2f2d2d58cf862ebb59080b8a637882f4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "quant-ph",
    "submitted_at": "2012-01-30T17:28:34Z",
    "title_canon_sha256": "6c2318baf9aebe56ba5006a3129e920021bb6a1173d64a92c4fe718af08d2c5f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.6292",
    "kind": "arxiv",
    "version": 1
  }
}